13015520320 has 56 divisors (see below), whose sum is σ = 33810781248. Its totient is φ = 4732915200.

The previous prime is 13015520207. The next prime is 13015520333. The reversal of 13015520320 is 2302551031.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 13015520291 and 13015520300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845276 + ... + 1852315.

Almost surely, 2^13015520320 is an apocalyptic number.

13015520320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13015520320 is an abundant number, since it is smaller than the sum of its proper divisors (20795260928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13015520320 is a wasteful number, since it uses less digits than its factorization.

13015520320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697619 (or 3697609 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

It can be divided in two parts, 13015 and 520320, that added together give a palindrome (533335).

The spelling of 13015520320 in words is "thirteen billion, fifteen million, five hundred twenty thousand, three hundred twenty".